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kernel: dont block allocating kstack for new processes

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Have newproc() fail returning nil if we can't allocate
the kernel stack instead of locking up in smalloc().
This commit is contained in:
cinap_lenrek 2021-10-16 13:12:59 +00:00
parent 4c7745b202
commit a557c515c8
1 changed files with 1 additions and 3 deletions
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4
sys/src/9/port/proc.c
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@ -634,7 +634,7 @@ newproc(void)
lock(&procalloc); lock(&procalloc);
p = procalloc.free; p = procalloc.free;
if(p == nil){ if(p == nil || (p->kstack == nil && (p->kstack = malloc(KSTACK)) == nil)){
unlock(&procalloc); unlock(&procalloc);
return nil; return nil;
} }
@ -655,8 +655,6 @@ newproc(void)
p->nlocks = 0; p->nlocks = 0;
p->delaysched = 0; p->delaysched = 0;
p->trace = 0; p->trace = 0;
if(p->kstack == nil)
p->kstack = smalloc(KSTACK);
/* sched params */ /* sched params */
p->mp = nil; p->mp = nil;